Salt of hexamethylentetramin and quinic acid and process of making same.



UNITED STATES PATENT OFFICE.

.GEORG 'WIOHMANN AND'MAX GABLE or BERLIN, GERMANY, ASSIGNOBS TO CHEMISOHE 'FABRIK AUF ACTIEN, (VORM. E. SGHERING,) o B ELIN,

GERMANY.

SALT OF HEXAME'I'HY'LENTETRAMIN AND QUINIC ACID AND PROCESS OF MAKING SAME.

SPECIFICATION forming part of Letters Patent No. 690,804, dated January '7, 1902.

' Application filed November 11, 1901. 'Serial No. 81,926- (No specimensJ To all 1071,0111, it may concern:

Be it known that we, GEORG WICHMANN and MAX GABLER, subjects of the German Emperor, and residents of Berlin, Germany,

have invented a new and useful Improvement in Salt of Hexamethylentetramin and Quinic Acid and Method of Making Same, of which the following is a specification.

This invention relates to the production of IO the chemical combination or salt of hexamethyleutetramin and quinic acid as distinguished from salt-like mixtures of these substances.

By combining hexamethylenteiramin and I5 quinic acid a combination or saltis produced which is of great ther eutical v e. Ithas been observed that-when this salt is employed a much stronger liberation or separation of formaldehyde takes place in the urina ry p 2o sages or organs than by the employment of hexamethylentetramin alone. This stronger liberation of formaldehyde cannot be ascribed merely to the fact that the acidity of the urine is increased by quinic acid, because even in cases in which an increase of the acidity of the urine does not occur after taking the salt of hexamethylentetramin and quinic acid an increased liberation of formaldehyde is always observed. V

For producing the salt of hexamethylentet ramin and quinic acid we proceed as follows:

Molecular quantities of quinic acid and hexamethylontetramin are dissolved in alcohol.

The solution is then filtered and evaporated 3 5 in vacuo. The salt of hexamethylentetramin and quinic acid separates as a sticky syrup which upon stirring, for instance, with a glass rod produces in a short time beautiful crystals of the salt. The crystals are dried,

0 preferably, in vacuo. They break up into small fragments at 105 centigrade and melt slowly between 118 and 125 centigrade.

Thesalt' loses the water of crystallization by drying in combo, and this water is takenup again upon exposure to air. The salt contains about fifty-eight per cent. of quinic acid and forty-two per cent. of hexamethylentetramin. Itis insoluble in ether and chloroform, slowly soluble in alcohol, and very 93S. ily soluble in water, in which it dissolves more readily than either of the two ingredients. It is impossible to extract the hexamethylentetramin from the'salt by chloroform, from which it appears that the hexamethylentetraniin is chemically combined with the quinic acid, for' the presence of the hem methylentetramin in the salt is readily established by the liberation or separation of formaldehyde.

We claim as our invention 1. The herein-described salt of hexamethylentetra'min and quinic acid, consisting practically of about fifty-eight per cent. of quinicv acid and about forty-two per cent. of hexamethylentetramin, which is a white crystalline body, melting between 118 and 125centigrade, insoluble inether and chloroform, slowly soluble in alcohol, and easily soluble in water.

2. The herein-described method of producing the salt of hexamethylentetramin and quinic acid, which consists in dissolving molccular quantities of hexamethylentetramin and quinic acid in a suitable solvent and evaporating the solution, substantially as set forth.

Witness our hands this 26th day of October, 1901.

GEORG WIOHMANN.

MAX GABLER.

Witnesses:

WOLDEMAR HAUPT, HENRY HASPER. r 

